paul ciancia, age 23. you can see in this video police converging on his former new jersey home. abc news spoke with the police. bhiel police there cannot confirm that ciancia is the shooter, they opened details on the young man's state of mind. a call came in today to police from a concerned family member. >> their younger child got a text message from paul stating that there was comments in there about his well being, and he wanted to possibly take his own life. and at that point, paul, his father, called me. and i went over there, and i made phone calls to lapd to get a well being check on him. >> reporter: sources say the note recovered at the scene ended with the letters nwo. which law enforcement believes refers to new world order. at this point the fbi believes he acted alone. they will investigate whether he has any ties to domestic terrorists. david. >> attention turning to those red flags. pierre thomas, thank you. we turn to the victims including the tsa officer shot and killed. those officers facing uncertain danger, consider this tonight. more than 1300 guns have bee